MADMAXGTA

iTrader: (1)

Do roller rockers need to be adjusted after so many miles on a fresh build?

DeuceNC

What I found by looking around on Google:

Unless your rocker nut is losing adjustment or the cam losing the lobe or lifter collapsing, the adjustment shouldn't be needed on a constant basis. After a rebuild, it's just to make sure everything is wearing in and adjusted correctly. After 500 - 1000 miles, no other adjustment should be necessary. If it keeps losing it's adjustment, you have problems. If you have a cam lobe wearing down, then the gap between the lobe and lifter gets farther apart and that's why the constant adjustment is needed. After it wears some more, it'll need adjusted again. That happens until there is no more lobe to wear out and you have enough metal filings in your engine to eat your bearings. That's how and why my 350 became a 383. The metal filing ate the bearings and crank so rather than getting my crank reground, I just bought a stroker crank. And a hyd roller cam so it wouldn't happen again.

Modern oils don't have the needed additive for flat tappet lifters anymore so an oil additive with ZDDP is needed.

I'm not trying to scare you. Just trying to warn you what to look for. If someone other than yourself built the engine and the lifters are not staying adjusted after 500 - 1000 miles, take it back so they can inspect the engine to see what is wrong.

MADMAXGTA

iTrader: (1)

Its a roller cam,and the rockers arnt chattering,I was just wondering if they ever need adjusting,like after a break in period for example. thx.

DT1987RS

hyd. roller or solid roller it ? If it is a hyd. roller then you should not have to mess with them unless a lifter is not staying pumped up. If it is a solid roller you should be going over the adjustment pretty regular.